The bees now have two frames of brood. I found a queen, unmarked, and distinctly yellower than the one I originally spotted. They've had no chance to raise a new one, so the swarm arrived with at least two. That's not particularly unusual.
This is the Salmon-Flowered Pea, an amazing old variety with a raft of recessive genes. Pink flowers, thickened, fasciated stems, and all the flowers together at the top. They all bloom at once, unfortunately. The peas are small, round and sweet. I don't know how old this particular variety is, but umbellate peas with this general form were popular from the late 17th Century until the early 19th.
Robinson's Purple Podded Pea, from Robinson's Seeds. These are often sold as generic 'Purple Podded Peas', but they're all different varieties of old field peas, grown originally for dried peas and animal fodder. This one reaches around six feet. The type was first bred on the continent by Capuchin monks in the 15th Century.
Champion of England, a tall marrowfat bred in 1843 by William Fairbeard. Darwin grew this one.
Carruthers' Purple Podded, with a young pod.